schunko



F. S CHUNK 0. GRAIN SEPARATOR.

Pat-e-n-tedA r. 6, 1858.

F. SCHUNKO, OF YORK, PENNSYLVANIA.

I GRAIN-SEPARATOR.

Specification of Letters Patent No. 19,877, dated April 6, 1858.

To all whom 'it may concern:

Be it known that I, FRANCIS SOI-IUNKO, of York, in the-county of .York andState of Pennsylvania, have invented a new and Improved Grain-Separator; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure 1, is a side sectional elevation of my improvement. Fig. 2, is an end view of ditto.

Similar letters of reference indicate corresponding parts in the two figures.

This invention consists in the employment or use of a series of sieves or screens and a blast fan, arranged relatively with each other and operated as hereinafter shown, whereby the grain is not only sieved or screened in'a perfect manner but, in its passage from one sieve or screen to the other, presented in .the most favorable manner to the action of the blast from the fan so that all light foreign substances will be blown from it. In order to render the operation of the screens and fan as perfect as possible provision is made for the adjustment of the former whereby the passage of the grain through the machine maybe accelerated or retarded as occasion may require.

To enable those skilled in the art to fully understand and construct my invention I will proceed to describe it.

A, represents a box or case supported by a suitable framing B. Within the box or case A, and at its front part a blast fan 0, is placed as shown clearly in Fig. l.

D, is a hopper placed on the upper part of the box or case and E, is a coarse inclined sieve or screen which is placed within the box or case A, just below the hopper D. The back end of the frame F, in which the screen E, is placed is attached to the hopper D at its lower end by a strap (a) and the front end of said frame is attached by cords (b), to a roller G, which passes transversely through the upper part of the box or case A, and has a ratchet (c) at one end in which a pawl catches, see dotted lines Fig. 1.

G, is an inclined board which is fitted in the box or case A, between cleats (6) so that it may be adjusted farther in or out as may be desired.

H, is an inclined frame fitted in the lower part of the box or case and having two screens I, J, placed within it, one over the other the lower screen J, being the finest and communicates with a discharge passage K, in the frame H, while the upper screen communicates with a passage L, the discharge end of which is at one side of the frame, see Fig. 2. The inner end of the frame H, is suspended by cords (f) to a roller M, which passes through the box or case and has a ratchet (g) at one end into which a pawl catches. The outer end of the frame H, is suspended by cords (i) to a roller N, which is fitted in arms (j) attached to and projecting from the case or box A. This roller has a ratchet O, at one end in which a pawl (70) catches.

The lower and inner end of the board G, projects over the inner end of the frame H, and its upper and outer end projects over a spout or passage P, in the box or case. The end piece (Z) of the box or case A, forms the outer side of this spout or passage P, and the end piece (Z) is provided at its upper end with an inclined board (m) which may be raised or lowered as also the end piece (Z) the edges of which are fitted in the grooves (Z) in the framing B.

The fan C, may be driven by multiplying gear (a) at one end, connected with one end of its shaft C, and the opposite end of the shaft has a cam I placed on it, said cam being formed of a circular disk with ratchet shaped projections (0) at its inner side, see Fig. 2.

J, is a lever which is placed at one side of the case or box and has its fulcrum at (39). One end of this lever is connected by a cord to the outer end of the frame F, at one side, the opposite side being connected by a cordto a spring The opposite end of the lever J, bears against the face of the cam I, see Fig. 2.

K, is a lever which is placed at the same side of the case or box as lever J. The lever K, has its fulcrum at (1") and its upper end bears against the'inner side of the lever J, near the cam I. The lower end of the lever K, is connected by a cord (8) to the outer end of the frame H, at one side, the opposite side being connected by a cord with a spring The operation is as follows: The grain to be cleaned is placed in the hopper D, and motion being given the shaft C, the fan C, is rotated and a shake motion given each frame F, H, in which the screens are placed, through the medium of the cam I, levers J, K", and the springs (9 i The grainpasses down through the screen E While all chafl and coarse foreign substances are blown from the box or case-by the blast from the fan C, while coarse impurities too heavy to be acted upon by the blast Will fall from the depressed end of screen E, into the passage P, see black arrows. The inclined board G, conducts the grain that falls upon it from the screen E, on -the screen I, the boards G and (m) beir ig;1 casion may require. e grain passes through the screen I, and falls on screen J, and impurities too coarse or large to pass through screen I, are conducted out of the machine by the passage L. Fine impurities cure by Letters Patent,

pass through the screen J and the sound grain passes out through the passage K. The grain it will be seen is subjected to the blast from fan C, during nearly the whole of its passage through the machine and by turning or adjusting the rollers G, M, N, a greater or less inclination may be given the screens so that the passage of the grain through the machine may be accelerated or retarded as circumstances may require. By operating the screens, that is, giving them the shake motion by means of the cam,

levers, and springs as shown, the screens adjusted as 00- are suddenly stopped at the completion of each stroke thereby giving a jarring shake motion Well calculated to render them eflticient in their operation.

I do not claim separately any of the parts herein shown and described for said parts or their equivalents have been previously used, but I am not aware that the parts have been arranged as herein shown so that the screens couldbe inclined more or less as desired, the screens subjected to a jarring shake motion and the grain subjected to the action of the blast during the principal .part of the time occupied in its passage through the machine. a

I claim therefore as new and desire to se The screens E, I, J, placed in adjustable frames F, H, operated by the cam I, levers J, K, and springs (g), (t), and arranged relatively with each other and the fan C,

spout or passage P, and board G, substantially as shown and described for the purpose set forth.

FRANO. soHUNKo. 

